import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '/components/Welcome.vue'


Vue.use(VueRouter)

const routes = [
    { path: '/', redirect: '/login' },
    { path: '/login', component: Login },

    {
        path: '/home',
        component: Home,
        redirect: '/welcome',
        children: [{ path: '/welcome', component: Welcome }]
    },
]


const router = new VueRouter({
    routes,
    mode: 'history',
})

//挂载路由导航守卫：只有携带了token才能允许访问该页面，否则强制跳转到login登录页
router.beforeEach((to, from, next) => {
    if (to.path === '/login') return next()
        //获取token
    const tokenStr = window.sessionStorage.getItem('token')
    if (!tokenStr) return next('/login')
    next()
})



export default router